The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Dec. 08, 2006
Chong Yun Kang, Seoul, KR;
Seok Jin Yoon, Seoul, KR;
Dae Yong Jeong, Seoul, KR;
Hyun Jai Kim, Seoul, KR;
Piotr Vasiljev, Vilnius, LT;
Ji Won Choi, Seoul, KR;
Chong Yun Kang, Seoul, KR;
Seok Jin Yoon, Seoul, KR;
Dae Yong Jeong, Seoul, KR;
Hyun Jai Kim, Seoul, KR;
Piotr Vasiljev, Vilnius, LT;
Ji Won Choi, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to a piezoelectric linear motor that can make relatively low abrasion and accurate linear movement since stationary AC voltages are applied to two piezoelectric elements with a phase difference. The present invention provides a piezoelectric linear motor, comprising: a piezoelectric substrate having a first piezoelectric element and a second piezoelectric element, wherein AC voltages are applied to the first and second piezoelectric elements with a phase difference; a metallic elastic body having first and second elastic bodies coupled to the piezoelectric elements and a central protrusion protruded at the central portion connecting the first and second elastic bodies, wherein the central protrusion oscillates elliptically during an application of the voltage; and a mover brought into contact with the central protrusion of the metallic elastic body for a linear movement, and wherein the movement of the mover is orthogonal to the central protrusion.